Sanford Manufactured Gasification Plant
Sanford, FL

Client
United States Environmental Protection Agency; NRT, Inc.; Site Owners

Project Value
$15,500,500


Project Type
Sustainable Remediation and In-Situ Stabilization

Project Summary


Major work elements included in the remediation actions of the Former Sanford Manufactured Gasification Plant Site in Sanford, FL were utility abandonment and relocation, diversion of Cloud Branch Creek through Operable Unit 1 (OU1), excavation and off-site transportation & disposal of OU1 soils, excavation of Operable Unit 3 (OU3) sediments and their transport to OU1, in situ stabilization/solidification (ISS) of the impacted soils and sediment, and site restoration in both OU1 and OU3.

The objective of the work was to remediate impacted properties for beneficial re-use and improve the overall drainage characteristics of Cloud Branch Creek and the surrounding area. The following major tasks items best describe Corrective Action Implementation:

  • Demolition and removal of selected buildings and structures within the treatment areas.

  • Excavation of impacted materials with off-site disposal at an approved solid waste Subtitle D landfill facility.

  • ISS of impacted soils within the limits (cut-lines) established in the OU1 AROD (USEPA 2006).

  • Utility relocates as well as major improvements to Cloud Branch Creek in the form of culvert installation.

  • Creek realignment as well as the 450 feet of open channel improvement of the creek located OU3 North at the confluence of Mill Creek.

  • Backfill and site restoration including mechanical compaction, topsoil, and grass

  • Collection and treatment of water collected during soil remediation prior to discharge into the public-owned treatment work (POTW) sanitation sewer.

Sustainable Remediation


The Sanford Gasification Plant Site located in Sanford, Florida is the largest environmental In-Situ Stabilization project in the United States. WRScompass concurrently operated two drill rigs at varying depths and stabilized more than 142,000 cubic yards of soil and diverted and rehabilitated more than 2,300 feet of creek bed. In conjunction with the USEPA, the site engineer and construction manager Natural Resource Technology, Inc, and the Site Owner, WRScompass applied its cleanNgreen sustainable remediation program.

WRScompass worked with the project team and assessed the existing plan – all the materials, equipment, and disposal options for the project – and implemented agreed upon alternative strategies that reduced emissions at no additional cost to the customer. One application was the use of granulated blast furnace slag in lieu of cement, resulting in a reduction of more than 10,000 tons of CO2. We also shifted to the use of tier-2 and tier-3 equipment, along with B20 diesel, which reduced greenhouse gas emissions by more than 20%. Additionally, we used a gravity drain system along the creek, which reduced reliance on the existing 7-pump diversion system and resulted in energy reductions.

Approximately 10 acres of trees and undergrowth were recycled and given to local landscaping companies to be used as mulch, creating more than 800 tons of recycled material that was not sent for landfill disposal.

Sustainable Remediation Summary

  • 142,000 cubic-yards in-situ stabilized soil

  • Greater than 2,300 feet creek diverted and rehabilitated

  • 10,000 tons of carbon dioxide reduced

  • Reduced greenhouse gas emissions by 20%

  • 18 million gallons of impacted groundwater and surface water treated

  • 800 tons of material recycled and diverted from landfill

  • $0 additional costs for dramatically improved project strategy and execution